1. (27)⅔×64 pangkat -1/6 adalah.... 2. 2¾+2/5-1½ adalah... 3. ³log81-²log32+8log 1/64=...... 4. bentuk sederhana dari (a³)⅔×1/a⅓ adlah... 5. diketahui p=a⅔.b pangkat -5/4. jika a=27 dan b=16, maka nilai P sama dengan.... 6. bentuk persen dari 37½% adalah....
tolong di bantu ya sama cara ngerjakan nya..
Syubbana
1) 27^(2/3) x 64^(-1/6) = (3^3)^(2/3) x (2^6)^(-1/6) = 3^2 x 2^(-1) = 9 x 1/2 = 9/2 = 4 1/2
27^(2/3) x 64^(-1/6)
= (3^3)^(2/3) x (2^6)^(-1/6)
= 3^2 x 2^(-1)
= 9 x 1/2
= 9/2
= 4 1/2
2)
2 3/4 + 2/5 - 1 1/2
= 11/4 + 2/5 - 3/2 samakan penyebutnya
= 55/20 + 8/20 - 30/20
= 33/20
= 1 13/20
3)
^3log81 - ^2log32 + ^8log1/64
= ^3log3^4 - ^2log2^5 + ^8log8^(-2)
= 4 - 5 + (-2)
= -3
4)
(a^3)^(2/3) x (1/a)^(1/3)
= a^2 x a^(-1/3)
= a^(2- 1/3)
= a^(5/3)
5)
p = a^(2/3).b^(-5/4).
jika a=27 dan b=16
p = 27^(2/3) . 16^(-5/4)
= (3^3)^(2/3). (2^4)^(-5/4)
= 3^2 . 2^(-5)
= 3^2/2^5
= 9/32
6) 37,5% = 375/1000 : 125/125 = 3/8
jawaban B